Rails - 如何将对象添加到变量

Question

我想做这样的事情:

@profiles
#(I think in Java, so I have declared an @profiles variable there! I know it's probably wrong!)
@users.each do |user|
  profile = Profile.find(params[user.id])
  @profiles.add(profile)
end

用户和个人资料具有一对一的关系.

用户有一个个人资料,个人资料属于用户

Answer 1

您需要初始化数组.

@profiles = []
@users.each do |user|
  profile = Profile.find(params[user.id])
  @profiles << profile if profile
end

如果你有关系,你应该只能说:

@profiles = []
@users.each do |user|
  profile = user.profile
  @profiles << profile if profile
end